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Long Distance Telephone Companies & Service in Frederick, MD
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1
At&t
At&t, Serving Over 81 Million Wireless Customers
(301) 846-0555
1170 W Patrick St, Ste C
Frederick
,
MD
21703-3965
2
MCI
(301) 846-9264
5714 Industry Ln
Frederick
,
MD
21704-7294
3
AT&T
(800) 828-8649
Frederick
,
MD
21701
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